191.简单箭头特效

效果 (源码网盘地址在最后)

源码

  
    
    
    
    简单箭头特效
    
  
  
    

  

css

body {
  background-color: #282828;
}
div.arrow {
  width: 6vmin;
  height: 6vmin;
  box-sizing: border-box;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: rotate(-45deg);
}
div.arrow::